All Questions
Tagged with audio headphones
70
questions
0
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1
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78
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TRS headphone output socket that may be used with a TS mono jack: how to prevent short to ground?
I'm using a TPA6132 headphone amplifier connected to a stereo (TRS) output socket. In my application, the output will usually be used as a line output, and only occasionally with headphones. The audio ...
1
vote
1
answer
103
views
TRS headphone jack wiring
Summary:
I have an in-ear-headphone that I am trying to replace the TRS jack for. I have tried soldering the wires to a jack a couple of times with the same no-good result. The left speaker doesn't ...
- 13
0
votes
1
answer
62
views
Options for line output doubling as headphone output
As the title says, I'd like a combined line/headphone audio output with the following design criteria:
ideally driven from 5V single supply (12V available, but noisy)
flat frequency response, also in ...
1
vote
2
answers
69
views
7 contacts 3.5mm jack socket: automatic speaker headphones switchover
Edit:
The output is mono on both headphones and internal speaker, despite the new connector being stereo.
Original:
I only have a mono audio source, and the new socket has dedicated pins for the L/R ...
- 13
0
votes
1
answer
106
views
Speaker/headphone amplifier switch feature triggered by 'switch' jack
I'm planning to use an amplifier that has both (distinct) speakers and headphones outputs and an input to select between them.
Such input switch the amplifier output on headphones if logic level is ...
- 257
1
vote
1
answer
242
views
TRRS headphone and mic swapper
I'd like to create a serial cable link library between two devices called Playdates. They have a TRRS audio jack, and my idea is to use a few cables as shown below to connect each Playdate's audio out ...
- 111
0
votes
0
answers
268
views
D-class audio amplifier like MAX98357A output for headset
The MAX98357A/MAX98357B PCM Input Class D Audio Power Amplifiers as used in Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A specify 4 or 8 Ohm speaker resistance, with 33 or 68 uH inductance.
I ...
- 41
0
votes
1
answer
287
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Bypass broken potentiometer in headphone
My headphone's volume control is broken so I am getting audio only on the left speaker. I have ordered a replacement but it's going to take a few days to arrive. Seeing this question, I had some hope,...
- 1
0
votes
1
answer
248
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How can I use smartphone aux / headphone jack to trigger a MOSFET?
I am working on a security project in which in case of any emergency my smartphone triggers an alarm or sound. This sound is in the form of audio by phone smartphones. When I connect earphone jacks, ...
3
votes
2
answers
202
views
Audio: Resistance and power
I'm choosing between two USB DACs for a pair 32 Ω headphones and need to choose the one with the greater output, i.e. with the greater loudness. One DAC has a maximum power rating of 18 mW at 16 Ω and ...
- 55
3
votes
1
answer
606
views
What wire runs between two speakers on a headphone, and how do I replace it?
I have a Sennheiser HD 280 Pro pair of headphones. There is a wire running through the bow that connects the left speaker in the headphone to the right one (see drawing, red line), I managed to snap ...
- 165
0
votes
0
answers
81
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LM4910 headphone amplifier noise source
I built a headphone amplifier using the LM4910, following the typical application schematic in the datasheet. The noise floor of this IC is specified at around 50uV for a 32 Ohm load, while my circuit ...
- 1
4
votes
1
answer
215
views
How to properly couple DC in this biased headphone amplifier design on power-up?
I am a self-study noob to electronics (and audio electronics) but diligently learning every day :) Some things I understand well, others I'm fuzzy on.
This device is a headphone amplifier using NE5532 ...
- 145
3
votes
1
answer
984
views
Headphone output - what is the function of these resistors going to ground between the decoupling capacitors and headphones
The Korg Monotron Duo synth uses the TPA6111A2 headphone amp. The circuit they use is largely the same as the one from the datasheet - except for R78, the 470ohm resistor going to ground right after ...
- 141
0
votes
1
answer
960
views
Headphone and speaker switching
I am having difficulty with a headphone plugged in and speaker mute configuration.
I am using the SJ-3524-SMT-TR headphone jack and the TPA711DGN audio amplifier IC. What circuitry should I use with ...
- 107